wp-includes/class-feed.php

   1 <?php
   2
   3 if ( !class_exists('SimplePie') )
   4         require_once (ABSPATH . WPINC . '/class-simplepie.php');
   5
   6 class WP_Feed_Cache extends SimplePie_Cache {
   7         /**
   8          * Create a new SimplePie_Cache object
   9          *
  10          * @static
  11          * @access public
  12          */
  13         function create($location, $filename, $extension) {
  14                 return new WP_Feed_Cache_Transient($location, $filename, $extension);
  15         }
  16 }
  17
  18 class WP_Feed_Cache_Transient {
  19         var $name;
  20         var $mod_name;
  21         var $lifetime = 43200; //Default lifetime in cache of 12 hours
  22
  23         function __construct($location, $filename, $extension) {
  24                 $this->name = 'feed_' . $filename;
  25                 $this->mod_name = 'feed_mod_' . $filename;
  26                 $this->lifetime = apply_filters('wp_feed_cache_transient_lifetime', $this->lifetime, $filename);
  27         }
  28
  29         function save($data) {
  30                 if ( is_a($data, 'SimplePie') )
  31                         $data = $data->data;
  32
  33                 set_transient($this->name, $data, $this->lifetime);
  34                 set_transient($this->mod_name, time(), $this->lifetime);
  35                 return true;
  36         }
  37
  38         function load() {
  39                 return get_transient($this->name);
  40         }
  41
  42         function mtime() {
  43                 return get_transient($this->mod_name);
  44         }
  45
  46         function touch() {
  47                 return set_transient($this->mod_name, time(), $this->lifetime);
  48         }
  49
  50         function unlink() {
  51                 delete_transient($this->name);
  52                 delete_transient($this->mod_name);
  53                 return true;
  54         }
  55 }
  56
  57 class WP_SimplePie_File extends SimplePie_File {
  58
  59         function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false) {
  60                 $this->url = $url;
  61                 $this->timeout = $timeout;
  62                 $this->redirects = $redirects;
  63                 $this->headers = $headers;
  64                 $this->useragent = $useragent;
  65
  66                 $this->method = SIMPLEPIE_FILE_SOURCE_REMOTE;
  67
  68                 if ( preg_match('/^http(s)?:\/\//i', $url) ) {
  69                         $args = array(
  70                                 'timeout' => $this->timeout,
  71                                 'redirection' => $this->redirects,
  72                                 'reject_unsafe_urls' => true,
  73                         );
  74
  75                         if ( !empty($this->headers) )
  76                                 $args['headers'] = $this->headers;
  77
  78                         if ( SIMPLEPIE_USERAGENT != $this->useragent ) //Use default WP user agent unless custom has been specified
  79                                 $args['user-agent'] = $this->useragent;
  80
  81                         $res = wp_remote_request($url, $args);
  82
  83                         if ( is_wp_error($res) ) {
  84                                 $this->error = 'WP HTTP Error: ' . $res->get_error_message();
  85                                 $this->success = false;
  86                         } else {
  87                                 $this->headers = wp_remote_retrieve_headers( $res );
  88                                 $this->body = wp_remote_retrieve_body( $res );
  89                                 $this->status_code = wp_remote_retrieve_response_code( $res );
  90                         }
  91                 } else {
  92                         $this->error = '';
  93                         $this->success = false;
  94                 }
  95         }
  96 }
  97
  98 /**
  99  * WordPress SimplePie Sanitization Class
 100  *
 101  * Extension of the SimplePie_Sanitize class to use KSES, because
 102  * we cannot universally count on DOMDocument being available
 103  *
 104  * @package WordPress
 105  * @since 3.5.0
 106  */
 107 class WP_SimplePie_Sanitize_KSES extends SimplePie_Sanitize {
 108         public function sanitize( $data, $type, $base = '' ) {
 109                 $data = trim( $data );
 110                 if ( $type & SIMPLEPIE_CONSTRUCT_MAYBE_HTML ) {
 111                         if (preg_match('/(&(#(x[0-9a-fA-F]+|[0-9]+)|[a-zA-Z0-9]+)|<\/[A-Za-z][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E]*' . SIMPLEPIE_PCRE_HTML_ATTRIBUTE . '>)/', $data)) {
 112                                 $type |= SIMPLEPIE_CONSTRUCT_HTML;
 113                         }
 114                         else {
 115                                 $type |= SIMPLEPIE_CONSTRUCT_TEXT;
 116                         }
 117                 }
 118                 if ( $type & SIMPLEPIE_CONSTRUCT_BASE64 ) {
 119                         $data = base64_decode( $data );
 120                 }
 121                 if ( $type & ( SIMPLEPIE_CONSTRUCT_HTML | SIMPLEPIE_CONSTRUCT_XHTML ) ) {
 122                         $data = wp_kses_post( $data );
 123                         if ( $this->output_encoding !== 'UTF-8' ) {
 124                                 $data = $this->registry->call( 'Misc', 'change_encoding', array( $data, 'UTF-8', $this->output_encoding ) );
 125                         }
 126                         return $data;
 127                 } else {
 128                         return parent::sanitize( $data, $type, $base );
 129                 }
 130         }
 131 }